import java.util.Scanner;

public class Da {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        if(a > 0) {
            if (a % 2 == 0) {
                System.out.println("是偶数");
            } else {
                System.out.println("基数");
            }
        }
        else {
            System.out.println("请重新输入");
        }
    }
}
